Fair Value of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Fixed income securities	$ 28,756	$ 44,876
Equity securities	650	345
Short-term Investments	590	875
Other investments:
Free-standing derivatives, assets	9	3	1
Separate account assets	5,039	6,610
Other liabilities:
Free-standing derivatives, liabilities	(14)	(30)	(89)
Liabilities held for sale	(14,899)
U.S. government and agencies
Assets
Fixed income securities	766	2,379
Municipal
Assets
Fixed income securities	3,304	4,704
Corporate
Assets
Fixed income securities	21,316	31,531
Foreign government
Assets
Fixed income securities	792	1,180
ABS
Assets
Fixed income securities	1,007	1,865
RMBS
Assets
Fixed income securities	790	1,791
CMBS
Assets
Fixed income securities	764	1,408
Redeemable preferred stock
Assets
Fixed income securities	17	18
Quoted prices in active markets for identical assets (Level 1)
Other investments:
Total assets at fair value	7,760	8,244
% of total assets at fair value	16.40%	15.60%
Significant other observable inputs (Level 2)
Other investments:
Total assets at fair value	37,962	42,570
% of total assets at fair value	80.20%	80.60%
Other liabilities:
Free-standing derivatives, liabilities	(185)	(91)
Total liabilities at fair value	(185)	(91)
% of total liabilities at fair value	1.60%	14.10%
Significant unobservable inputs (Level 3)
Other investments:
Total assets at fair value	1,635	2,077
% of total assets at fair value	3.40%	3.90%
Contract holder funds:
Derivatives embedded in life and annuity contracts		(553)
Other liabilities:
Free-standing derivatives, liabilities		(30)
Total liabilities at fair value	(11,655)	(583)
% of total liabilities at fair value	98.50%	90.40%
Counterparty and cash collateral netting
Other investments:
Total assets at fair value	(11)	(47)
% of total assets at fair value		(0.10%)
Other liabilities:
Free-standing derivatives, liabilities	7	29
Total liabilities at fair value	7	29
% of total liabilities at fair value	(0.10%)	(4.50%)
Fair Value
Other investments:
Assets held for sale	15,593
Total assets at fair value	47,346	52,844
% of total assets at fair value	100.00%	100.00%
Mortgage loans	8	4
Other investments		1
Limited partnership interests	9	1
Contract holder funds:
Derivatives embedded in life and annuity contracts		(553)
Other liabilities:
Free-standing derivatives, liabilities		(92)
Liabilities held for sale	(246)
Total liabilities at fair value	(11,833)	(645)
% of total liabilities at fair value	100.00%	100.00%
Recurring basis | Quoted prices in active markets for identical assets (Level 1)
Assets
Fixed income securities	145	1,074
Equity securities	593	338
Short-term Investments	129	220
Other investments:
Separate account assets	5,039	6,610
Other assets		2
Assets held for sale	1,854
Total assets at fair value	7,760	8,244
Recurring basis | Quoted prices in active markets for identical assets (Level 1) | U.S. government and agencies
Assets
Fixed income securities	145	1,074
Recurring basis | Significant other observable inputs (Level 2)
Assets
Fixed income securities	27,370	41,742
Equity securities	51
Short-term Investments	461	655
Other investments:
Free-standing derivatives, assets	268	173
Assets held for sale	9,812
Total assets at fair value	37,962	42,570
Other liabilities:
Total liabilities at fair value	(185)
Recurring basis | Significant other observable inputs (Level 2) | U.S. government and agencies
Assets
Fixed income securities	621	1,305
Recurring basis | Significant other observable inputs (Level 2) | Municipal
Assets
Fixed income securities	3,185	4,366
Recurring basis | Significant other observable inputs (Level 2) | Corporate
Assets
Fixed income securities	20,308	30,030
Recurring basis | Significant other observable inputs (Level 2) | Foreign government
Assets
Fixed income securities	792	1,180
Recurring basis | Significant other observable inputs (Level 2) | ABS
Assets
Fixed income securities	895	1,666
Recurring basis | Significant other observable inputs (Level 2) | RMBS
Assets
Fixed income securities	790	1,791
Recurring basis | Significant other observable inputs (Level 2) | CMBS
Assets
Fixed income securities	763	1,387
Recurring basis | Significant other observable inputs (Level 2) | Redeemable preferred stock
Assets
Fixed income securities	16	17
Recurring basis | Significant unobservable inputs (Level 3)
Assets
Fixed income securities	1,241	2,060
Equity securities	6	7
Other investments:
Free-standing derivatives, assets	9	3
Other assets		1
Assets held for sale	362
Total assets at fair value	1,618	2,071
Contract holder funds:
Derivatives embedded in life and annuity contracts	(307)
Other liabilities:
Free-standing derivatives, liabilities	(14)
Liabilities held for sale	(246)
Total liabilities at fair value	(567)
Recurring basis | Significant unobservable inputs (Level 3) | Municipal
Assets
Fixed income securities	119	338
Recurring basis | Significant unobservable inputs (Level 3) | Corporate
Assets
Fixed income securities	1,008	1,501
Recurring basis | Significant unobservable inputs (Level 3) | ABS
Assets
Fixed income securities	112	199
Recurring basis | Significant unobservable inputs (Level 3) | CMBS
Assets
Fixed income securities	1	21
Recurring basis | Significant unobservable inputs (Level 3) | Redeemable preferred stock
Assets
Fixed income securities	1	1
Recurring basis | Counterparty and cash collateral netting
Other investments:
Free-standing derivatives, assets	(11)	(47)
Total assets at fair value	(11)	(47)
Other liabilities:
Total liabilities at fair value	7
Recurring basis | Fair Value
Assets
Fixed income securities	28,756	44,876
Equity securities	650	345
Short-term Investments	590	875
Other investments:
Free-standing derivatives, assets	266	129
Separate account assets	5,039	6,610
Other assets		3
Assets held for sale	12,028
Total assets at fair value	47,329	52,838
Contract holder funds:
Derivatives embedded in life and annuity contracts	(307)
Other liabilities:
Free-standing derivatives, liabilities	(192)
Liabilities held for sale	(246)
Total liabilities at fair value	(745)
Non-recurring basis | Significant unobservable inputs (Level 3)
Other investments:
Total assets at fair value	17	6
Other liabilities:
Total liabilities at fair value	(11,088)
Non-recurring basis | Fair Value
Other investments:
Total assets at fair value	17	6
Other liabilities:
Total liabilities at fair value	$ (11,088)